#coding=utf-8
#askcolor颜色选择框的测试，改变背景色

from tkinter import  *
from tkinter.filedialog import *

root = Tk();root.geometry("400x100")

def test1():
    with askopenfile(title="上传文件",
                     initialdir="d:",filetypes=[("文本文件",".txt")]) as f:
        show["text"]=f.read()


Button(root,text="选择读取的文本文件",command=test1).pack()

show = Label(root,width=40,height=3,bg="green")
show.pack()

root.mainloop()
